This only contains the folder CHANNELS. You have to download this file (https://filetrip.net/f26981-M3-Plus-System-1-40.html) first, then replace the CHANNELS folder with this one.
It seems that CHANNELS folder only contains moonshell and UApaint. However, after unpacking it has 100MB. I don't know why. Moonshell has a few modifications. I think it is worth downloading it